In order to meet the requirements of future high-tech war, a naval unit under the North China Sea Fleet actively explored the fighting methods under complex and changeable conditions, such as anti-submarine patrol operation by single submarine chaser for the protection of naval base or port, and anti-submarine operation by single submarine chaser for the protection of important sea-lanes. As a result, the fighting capability of the unit has been greatly boosted.

　　By Zhang Lei

　　(December 16, PLA Daily)